Securing device for gears.



A. F. NASURY.

SECURING DEVICE FOR GEARS. APPLICATION men 1AN.2,1914.

J. WITNESSES HW/E/VTUR %W/% (W W A770 NEYS w (L-{M 3.

UNKTED @TATE% PA ALFRED IE. MASUBY, OF NEW YORK, N. Y., ASSIGNOR TU INTERNATlOl'l'AL MOTGR COMEANY, OF NEW YORK, N. Y., A CORPORATION OF DELAVIARE.

SEGUEING DEVICE FGR GEARS.

icence.

Patented June :5,

Application filed January 2, 1914. Serial No. 80%,872.

mitted from the drive shaft to the jack shaft.

Under such conditions of use economy of space is e desideratum second only to that of strength. Pinions are usually fixed on the driving shaft by means of splines or 2 keys engaging with key-Ways formed on the hub of the pinion but such key-Ways, of course, reduce the strength of the pinion eppreciably and consequently the pinion must be made relatively large to compensate for such Weakness. This weakening eilect of key-ways in hardened pinions is especially appreciable.

it is the object of the present invention toprovide improved means for securing the pinion to the driving shaft by which the pinion is in nowise weakened and its engagement with the shaft is equally efiectivo as that formed by the usual key-Way and spline.

In accordance with the invention the pinion hub has formed in one end thereof a. slot or slots to engage a. projection or projec- "tions on the shaft. Preferably, the pinion is tapered interiorly so as to have a driving fit on a correspondingly tapered portion of the shaft and the pinion is maintained in its operative position by means of a nut threaded on the shaft, and engaging that face'of the pinion which is not formed with the annular flange above referred to.

Reference is to he had to the accompanying drawings for a detailed description of the invention in which Figure 1 is a view looking up into a gear casing from the underside thereof and showing a transmission gear to which the inven- 'tion is applied. iiig. 2 is a detail view on a somewhat larger scale and partly in sec ticn showing a driving shaft on which 2.

driving pinion is fixed and showing also suitable bearings therefor such as are vided in the embodiment shown in Fig. 3 is a detail vien in section pinion removed from the sin end view thcrcoi indicating: conventions the teeth of the pinion.

Referring now to i extending into the crank shaft 3), on the end of *1 gear I) Whichis constun in mesh with a. s5 gear 0 carried by a lay sh Ah 0 to which are also secured pinions c adapt geged by sliding gears .11 or the independent rosin drivt control the SPOE-Cl of the ve Well known. As usual, the i also carry a gear 0 with n idler gear e to permit the (hirer tion of the shaft (1 to rover gear (2 is moved into mesh the gear. lhe shaft (Z has secured th driving bevel pinion f, the teeth of are in mesh with the teeth of o bevel carried on the jack shaft g", dotted lines.

to engage lugs or projections, i usual splines (Z secured to or l? egrol theslmft (/T". in actual practice the shai is preferably tapered, us at (P, and the l of the pinion f is also tapered interiorly and smooth bored to have close on th pered portion of the shaft splines {i entering the mill slots 7' as pinion is fitted on to the s raft. when in normal position the pinion znuv he loclrei against axial movement by mean ing niit 7L threaded on the shaft and enes gaging the free end face of the pinion. To economize space the nut h preferably rests Within a recess 7" formed in said end face. In keeping with the general obje of the invention to economize space W ficing strength the hub of the p tended to form a sleevedilre terniediui'e its ends on which ing collar constituting one of any convenient the roller bearing by Li 1e roferonc jected to severe strains and accordingly 1t becomes necessary not only that its inherent structure should he stout but also that it should be adequately supported by suitable bearings arranged in proximity to it. By eliminating the'use of a key-way or other usual attachingmeans'by which the pinion is affixed to the driving shaft, and thereby eliminating the weakening elements, it becomes possible to construct a pinion of relatively small external dimensions and thus place relatively substantial bearings within the limited space of the gear casing and in immediate proximity to Lhc'two faces of the bevel pinion. For instance, in the illus- 'trated embodiment the roller bearing L completely encircles the hub of the bevel pinion close to its outer face and a second bearing Z receives the free end of the shaft (Z which; extends beyond the lock nut h. These bearings give the pinion 7' a perfectly uniform and substantial support and relieve it of unusual twisting and lateral stresses.

Nhile the improved device will find a great range of usefulness in otherfields, the peculiar conditions of use surrounding the construction and compact arrangement of shafting and gearing Within the gear casing,

of an automobile make the improved pinion of especial value in this art.

Mod fications WhlCll may suggest them-' selves to skilled mechanics may be made the driving shaftiand provided with. a sleevelike portion on an extension of one face, the sleeve having a: plurality of longitudinal slots cut in its end and arra driving engagement with the sp ines, and a nut threaded on the driving shaft and bearig g against the other face of the pinion to V maintain the pinion in engagement with the splines.

This specification signed and witnessed this 30 day of December A.'D. 1913.

U ALFRED F. MASURY.

oigned in the presence of JANET C. VIVASI'I. E. C. FINE.

ed in loose 

